Failure wave motion of 3D-C/SiC composites subjected to shock compression

The response and failure behavior of 3D-C/SiC composites subjected to shock compression have been experimentally studied. With the help of a one-stage light gas gun, the 3D-C/SiC composite samples, which are subjected to the plane shock compression by LY-12 aluminum flyer sheets with different speed s become available. Based on the analysis of observation for the curve of p ressure vs time, which has been measured from the tests as well as from the samples, it is found that when the shock speed is larger than a critical v alue, the material of 3D-C/SiC will be comminuted and the failure surface w ill move from the shock plane to its inward direction in the waveform.